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Note 18 – Share Based Awards (Tables) | 6 Months Ended
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Oct. 31, 2023
Share-Based Payment Arrangement [Abstract] |
[custom:ScheduleOfAssumptionsUsed1TableTextBlock] |
|  |  | 2023 |  |  |  | 2022 |
Exercise Price |  | $ | 0.95 – 1.12 |  |  | $ | 2.38 |
Stock price on date of grant |  |  | 0.95 – 1.12 |  |  |  | 2.38 |
Risk-free interest rate |  |  | 3.47 – 4.34% |  |  |  | 3.34% |
Dividend yield |  |  | — |  |  |  | — |
Expected term (years) |  |  | 6.00 – 8.25 |  |  |  | 8.25 |
Volatility |  |  | 242.38 – 260.22% |  |  |  | 260.06% |
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] |
|  | Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term |  | Aggregate Intrinsic Value
Outstanding as of April 30, 2022 |  |  | 3,694,142 |  |  | $ | 2.17 |  |  |  | 8.56 |  |  |  | 1,407,545 |
Granted |  |  | 1,503,500 |  |  |  | 1.40 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (412,833 | ) |  |  | 2.67 |  |  |  |  |  |  |  |  |
Outstanding as of April 30, 2023 |  |  | 4,784,809 |  |  |  | 1.88 |  |  |  | 8.72 |  |  |  | 74,586 |
Granted |  |  | 2,541,042 |  |  |  | 1.01 |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (464,334 | ) |  |  | 2.43 |  |  |  |  |  |  |  |  |
Outstanding as of October 31, 2023 |  |  | 6,861,517 |  |  |  | 1.52 |  |  |  | 8.54 |  |  |  | 57,374 |
Exercisable as of October 31, 2023 |  |  | 3,261,527 |  |  | $ | 1.91 |  |  |  | 6.96 |  |  | $ | 57,374 |
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] |
|  | Shares |  | Weighted Average Grant-Date Fair Value Per Share
Unvested and outstanding as of April 30, 2022 |  |  | 1,083,675 |  |  | $ | 2.59 |
Granted |  |  | 780,884 |  |  |  | 2.14 |
Vested |  |  | (1,062,372 | ) |  |  | 2.42 |
Forfeited |  |  | (21,127 | ) |  |  | 2.13 |
Unvested and outstanding as of April 30, 2023 |  |  | 781,060 |  |  |  | 2.44 |
Granted |  |  | 298,643 |  |  |  | 1.06 |
Vested |  |  | (229,197 | ) |  |  | 1.92 |
Forfeited |  |  | (70,656 | ) |  |  | 1.25 |
Unvested and outstanding as of October 31, 2023 |  |  | 779,850 |  |  | $ | 2.11 |
Schedule of Deferred Compensation Arrangement with Individual, Share-Based Payments [Table Text Block] |
|  | Three months ended October 31, |  | Six months ended October 31,
|  | 2023 |  | 2022 |  | 2023 |  | 2022
Operations |  | $ | 238,522 |  |  | $ | 225,879 |  |  | $ | 429,621 |  |  | $ | 384,310 |
Research and development |  |  | 147,629 |  |  |  | 209,497 |  |  |  | 275,046 |  |  |  | 354,295 |
Sales and marketing |  |  | 208,903 |  |  |  | 162,269 |  |  |  | 374,212 |  |  |  | 269,343 |
General and administrative |  |  | 601,271 |  |  |  | 649,151 |  |  |  | 1,029,052 |  |  |  | 994,319 |
Total |  | $ | 1,196,325 |  |  | $ | 1,246,796 |  |  | $ | 2,107,931 |  |  | $ | 2,002,267 |

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